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Table 2 Substrate specificity of HTMT from R. sativus.

From: Involvement of S-adenosylmethionine-dependent halide/thiol methyltransferase (HTMT) in methyl halide emissions from agricultural plants: isolation and characterization of an HTMT-coding gene from Raphanus sativus(daikon radish)

Anion (mM)

Production rate of methyl compounds (pmol/min/mg protein)

 

Raphanus sativus

Brassica oleracea

Cl--(20)

N.D. *

--

   (50)

6

--

Br--(20)

79

--

   (50)

234

--

I--(20)

3,094

2,685

   (50)

5,552

--

[SH]- ((NH4)2S) (20)

339

267

[SH]- (NaSH) (20)

6,428

4,456

[SCN]- (20)

1,028 **

645 **

[CN]- (20)

N.D. *

N.D. *

  1. *N.D., not detected.
  2. ** Measured from the amount of CH3SH converted from CH3SCN in the gaseous phase; the amount of CH3SCN in the liquid phase was negligible.